document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65490>Question 65490</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (92)	Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C grade.\r<BR>\n" );
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document.write( "(94)	Business and finance. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #46022 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=46022\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (92) Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C grade. <BR>\n" );
document.write( "TOTAL MARKS IN 3 TESTS = 75+63+68=206<BR>\n" );
document.write( "LET SCORE IN THE LAST TEST = X <BR>\n" );
document.write( "TOTAL SCORE IN 4 TESTS = 206+X<BR>\n" );
document.write( "AVERAGE IN 4 TESTS = A = (206+X)/4 <BR>\n" );
document.write( "A>=70 HENCE <BR>\n" );
document.write( "(206+X)/4 >=70<BR>\n" );
document.write( "206+X >= 4*70=280<BR>\n" );
document.write( "X>= 280-206=74\r<BR>\n" );
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document.write( "(94) Business and finance. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3. <BR>\n" );
document.write( "L.D.CALL CHARGE FOR 1 ST.MINUTE = 0.36<BR>\n" );
document.write( "LET THE TOTAL NUMBER OF MINUTES TALKED = T MTS.<BR>\n" );
document.write( "ADDITIONAL MINUTES TALKED OVER THE I MINUTE = T-1 <BR>\n" );
document.write( "CHARGES FORT ADDITIONAL MINUTES = (T-1)*0.21<BR>\n" );
document.write( "TOTAL CHARGE = 0.36+(T-1)*0.21<=3.00 $<BR>\n" );
document.write( "0.36+0.21T-0.21<=3<BR>\n" );
document.write( "0.21T<=3-0.36+0.21=2.85<BR>\n" );
document.write( "T<=2.85/0.21=285/21=95/7.\r<BR>\n" );
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